Android如何调用so文件

public class NativeLibrary {
    // 加载so文件
    static {
        System.loadLibrary("native-lib");
    }

    // 定义native方法，与so文件中的函数关联
    public native void callNativeFunction();
}

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

# 编译的目标so文件名为libnative-lib.so
LOCAL_MODULE := native-lib

# 引入需要编译的源文件
LOCAL_SRC_FILES := native-lib.cpp

include $(BUILD_SHARED_LIBRARY)

#include <jni.h>
#include <android/log.h>

extern "C" {
JNIEXPORT void JNICALL
Java_com_example_NativeLibrary_callNativeFunction(JNIEnv *env, jobject instance) {
    __android_log_print(ANDROID_LOG_DEBUG, "NativeLibrary", "Hello from native-lib");
}
}

NativeLibrary nativeLibrary = new NativeLibrary();
nativeLibrary.callNativeFunction();